Inserting The Dci Probe Into The Insertion Lock - Waters GCT Premier Operator's Manual

Warning:
chemical-resistant, powder-free gloves at all times when
handling the probe.
To load sample into the DCI probe:
Caution:
fragile. Be careful not to damage the tip when handling it.
1. Push the DCI tip onto the end of the DCI probe.
2. Dissolve the sample in a volatile GC-grade solvent such as methanol to a
concentration of 1 ng/µL.
Tip: If necessary, to increase the amount of sample introduced via the
tip, use a correspondingly stronger solution. It is common to run samples
of between 1 ng and 1 µg.
3. Deposit 1 µL (1 ng of sample) on the end of the DCI probe tip using a
syringe.
Tip: The droplet stays at the tip due to surface tension.
4. Wait for the solvent to evaporate.
5. Insert the probe into the source.
See also:

Inserting the DCI probe into the insertion lock

Caution:
lock is operated with the probe incorrectly positioned.
To insert the loaded probe into the ion source:
1. Ensure that the instrument is pumped-down (evacuated) and is ready
for use.
See also:
2. Ensure that the probe insertion lock valve is closed.
8-4 The Direct Chemical Ionization (DCI) Probe
To avoid contamination from samples, wear
The wire filament at the end of the DCI probe tip is
Inserting the DCI probe into the insertion lock on page
Damage to the instrument might occur if the probe insertion
Chapter A, Starting-up and Shutting-down the
8-4.
Instrument.